2025 NYC Chess Norms Memorial Day Marshall Invitational IM C
10 players participated in this 9-round tournament, held from 22 May 2025 to 26 May 2025 in New York, NY, United States. 8 titled players from 4 federations. Top 10 Elo average was 2260, and top seed was Aleksandr Lenderman (🇺🇸 USA, GM, 2458).
Aleksandr Lenderman (🇺🇸 USA, GM, 2458) won with 6.5/9, ahead of Oliver Barbosa (6.0) and Haari Muthukumar (6.0). Lenderman shared the lead from round 8 and broke clear in the final round.
The biggest upset came in round 3: Jonathan Sigfredo Subervi (FM, 2039) beat Mark Paragua (GM, 2433), a +394-point gap.
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How it unfolded
Top 10 · 9 rounds3 leader changes shaped the tournament; Lenderman pulled away in R9.
GM Oliver Barbosa takes the sole lead (3.5/4).
GM Aleksandr Lenderman drew with GM Oliver Barbosa (White).
GM Aleksandr Lenderman went unbeaten across 9 games (R1–R9).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇺🇸GMLenderman, Aleksandr | 2458 | * | ½ | ½ | ½ | ½ | 1 | 1 | 1 | ½ | 1 | 6.5 | 25.00 | 37.5 | -2.6 | 2406 |
| 2 | 🇵🇭GMBarbosa, Oliver | 2430 | ½ | * | 1 | ½ | ½ | ½ | 1 | 1 | — | 1 | 6.0 | 24.75 | 38.0 | +2.9 | 2437 |
| 3 | 🇺🇸FMMuthukumar, Haari | 2222 | ½ | 0 | * | ½ | ½ | 1 | 1 | 1 | 1 | ½ | 6.0 | 22.75 | 38.0 | +78.8 | 2389 |
| 4 | 🇭🇺GMBerczes, David | 2397 | ½ | ½ | ½ | * | ½ | ½ | ½ | ½ | 1 | 1 | 5.5 | 21.25 | 38.5 | -6.2 | 2325 |
| 5 | 🇵🇭GMParagua, Mark | 2433 | ½ | ½ | ½ | ½ | * | ½ | 1 | 0 | ½ | 1 | 5.0 | 20.50 | 39.0 | -15.1 | 2284 |
| 6 | 🇺🇸Shangin, Lev | 2089 | 0 | ½ | 0 | ½ | ½ | * | ½ | 1 | ½ | 1 | 4.5 | 15.75 | 39.5 | +79.6 | 2279 |
| 7 | 🇺🇸CMHo, Carter | 2238 | 0 | 0 | 0 | ½ | 0 | ½ | * | 1 | ½ | 1 | 3.5 | 10.75 | 40.5 | -29.6 | 2182 |
| 8 | 🇩🇴FMSubervi, Jonathan Sigfredo | 2039 | 0 | 0 | 0 | ½ | 1 | 0 | 0 | * | 1 | ½ | 3.0 | 11.00 | 41.0 | +20.2 | 2157 |
| 9 | 🇺🇸FMPressman, Leif | 2219 | ½ | — | 0 | 0 | ½ | ½ | ½ | 0 | * | ½ | 2.5 | 10.50 | 41.5 | -25.6 | 2103 |
| 10 | 🇺🇸Iinuma, Paul Y | 2075 | 0 | 0 | ½ | 0 | 0 | 0 | 0 | ½ | ½ | * | 1.5 | 5.75 | 42.5 | -17.0 | 2008 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Shangin, LevUSA+79.64.5 pts · #6
- 2Muthukumar, HaariFMUSA+78.86.0 pts · #3
- 3Subervi, Jonathan SigfredoFMDOM+20.23.0 pts · #8
- 1Ho, CarterCMUSA-29.63.5 pts · #7
- 2Pressman, LeifFMUSA-25.62.5 pts · #9
- 3Iinuma, Paul YUSA-17.01.5 pts · #10
- R3+394 Elo gap
- R4+180 Elo gap